Manually uninstalling a plugin
If you can't use an uninstaller program to remove a plugin, you can remove it manually:
In the Location bar, type about:config and press EnterReturn.
The about:config "This might void your warranty!" warning page may appear. Click I'll be careful, I promise!, to continue to the about:config page.
Search for the preference: plugin.expose_full_path.
Double-click on the plugin.expose_full_path preference in the list to change the value to true.
Enter about:plugins into the Location bar to display the About Plugins page.
Each entry in the About Plugins page will have "File name:" followed by a path. Use Windows Explorer to navigateNavigate to the folder shown for the plugin you want to remove.
Rename the file to something other than its normal name - e.g. npswf32 becomes Xnpswf32
Double-click on the plugin.expose_full_path preference in the list on the about:config page to change the value back to false to avoid exposing the plugin path to websites.
The plugin will be removed.